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tribeca_77

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  1. Hello Dears, yesterday I finally tried the XBMC player under Linux using alsa drivers for my card. I have to say that it has a number of interesting features. First of all I don't think it sounds different from other players with the right setup. The most intriguing feature is that you read CD-audio at very low speed. I don't what it does, but in the option panel you have to choose how to encode cdda, I set it to wav and my drive runs very smooth while playing. I compared this to my transport and I have to say it does even better!!! Second trial: I burned a data dvd-rom with two folders, the first folder contains 16/44.1 original ripped songs, while the second folder contained the 24/192 upsampled counterparts using SOX resampler... waoooho! XBMC playes from the dvd-drive with no problems and it runs so smooth that can't year it. If you put cover arts in the disk it even fetch covers! I love this one. Anyway I wonder whether it buffer data before to send to the audio card and how it reads cdda. The other nice thing is that yo can run a xbmc live on a usb stick while playing files on the internal HD. But I don't think it is so important, after all when playing 192Khz wavs it only uses 4% of CPU. I hope to have time to do new experiments these days. Best P
  2. Hello Dears, I don't think that the FFT would be a good test. Usually these people are not stupid so if they have done something like that they injected some out-of-band noise. There is simple and effective way to see whether a signal has been upsampled. You just have to look at the signal in the time domain on small windows (say 5-10 msecs), if the signal locally varies much more than its is red-book counterpart then it's highly probable that it has been upsampled. Unfortunately there is no objective measure that can say whether a a wave has been upsampled. best wishes Pietro
  3. Hello! yes I had in mind a memory player with the essential functions needed for an audiophile usage. I think at some point somebody should come up with such a solution! Cheers Peter
  4. Hello dears, I am new to the forum and long-time computer audiophile. I am a linux user and I love to take advantage of administrating music on the computer. However, event hough I backup my music HD on two external HDs (so I have three copies of my music files) I am obsessed about HD crashes... 1.5TB of music is not easy to to transfer onto a HD!! On the other hand I noticed that playing files in WAV (rather than other lossless format) sounds better, and also playing files resampled at high frequency (mainly 192KHz) improves the overall smoothness and dynamic by a big margin... this is quite evident on my Avantgarde Trio + Bass Horn setup. In fact, I made thousands of blind tests comparing original WAVs vs SoX resampled WAVs and in most cases dynamic and high frequencies response improved a lot. My system is quite reveling and I did this with tracks I used to listen since I was 18... now I am quite an old man! I wonder whether there is a way to play wav files from CD-rom without pushing the CD-ROM speed to high. I would like to have something like the PS-audio concept, that is: 1. insert the disc into the ROM drive 2. the ROM drive buffers the music into the RAM 3. Music is directly played from the RAM (like the CPlay does) this would allow the 1. the ROM drive to run at the lowest speed and all the advantages of computer music would be still there 2. to store 16/44.1 wav files plus resampled files on DVD disk without taking too much space on the HDs 3. you do not have to worry about HD crashes... that's very important!!! I wounder why such a thing has not been implemented, or why nobody is interested in this. Anyway it was just a provocative thought! Best Peter
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